Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1012 - Cartographic materials
- Subseries Level 2002 - Plats
- 1423 more...
- ItemPlat013311 - Plat Map of Great Northern Facilities at Concrete, Washington, undated
- ItemPlat013312 - Plat Map of Great Northern Facilities at Concrete/Grassmere, Washington, 1964
- ItemPlat013313 - Plat Map of Great Northern Facilities at Concrete/Grassmere, Washington, 1964
- ItemPlat013314 - Plat Map of Great Northern Facilities at Conkelley, Washington, 1959
- ItemPlat013315 - Plat Map of Great Northern Facilities at Conkelley, Washington, 1959
- ItemPlat013316 - Plat Map of Great Northern Facilities at Conkelley, Washington, 1959
- ItemPlat013317 - Plat Map of Great Northern Facilities at Conkelley, Washington, 1959
- ItemPlat013318 - Plat Map of Great Northern Facilities at Conkelley, Washington, 1959
- ItemPlat013319 - Plat Map of Great Northern Facilities at Conkelley, Washington, 1959
- 322 more...